21111010110003 has 32 divisors (see below), whose sum is σ = 30838801593600. Its totient is φ = 12739657219200.

The previous prime is 21111010109953. The next prime is 21111010110019. The reversal of 21111010110003 is 30001101011112.

It is not a de Polignac number, because 21111010110003 - 2⁹ = 21111010109491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21111010110503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14771868 + ... + 16137846.

It is an arithmetic number, because the mean of its divisors is an integer number (963712549800).

Almost surely, 2^{21111010110003} is an apocalyptic number.

21111010110003 is a deficient number, since it is larger than the sum of its proper divisors (9727791483597).

21111010110003 is a wasteful number, since it uses less digits than its factorization.

21111010110003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368003.

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 21111010110003 its reverse (30001101011112), we get a palindrome (51112111121115).

The spelling of 21111010110003 in words is "twenty-one trillion, one hundred eleven billion, ten million, one hundred ten thousand, three".